Compounds of the formula: ##STR1## or pharmaceutically acceptable acid addition or quaternary ammonium salts thereof wherein R.sup.2 is C.sub.1 to C.sub.6 alkyl: R.sup.3 is C.sub.1 to C.sub.6 alkyl; R.sup.4 is a single electron pair, hydrogen or lower alkyl; and the dotted lines indicate saturated or unsaturated bonds, are disclosed with analgesic properties.
公式为:##STR1## 或其药学上可接受的酸加成物或季
铵盐,其中R.sup.2为C.sub.1到C.sub.6烷基;R.sup.3为C.sub.1到C.sub.6烷基;R.sup.4为单个电子对、氢或低烷基;点线表示饱和或不饱和键,具有镇痛性质。